This controller will run four (4) HID lights at 240 Volts - Maximum 4000 Watts. The only lighting controllers featuring industrial-grade ballast rated relays. 120 Volt accessory timed outlet (max 2 Amps) to activate in-line fans to cool your lamps. Plug relay trigger cord set into 24 hour wall timer. Universal outlets allow total flexibility. On/Off switch that makes lamp replacement easy. Removable back panel makes controller easy to wire into your power system. Durable powder-coated steel chassis. 30 Amps input power/20 Amps output power/240 Volts/60 Hz./4000 watts. Patent No. D660,252.